How this calculation was worked out
The result uses the exact inputs on this page and calendar/time arithmetic appropriate to this calculator. The result shown above is the value to use for this calculation.
August 15, 2026 51 days agoWhat day of the week is August 15, 2026?
Calendar position
Saturday, August 15, 2026 falls on a Saturday. It is day 227 of 365 in 2026, in ISO week 33, in quarter 3 and in summer in the northern hemisphere. The date is 51 days ago, and it is part of a weekend, so most offices and schools are closed. It does not coincide with any of the major holidays tracked on this site that year. On August 15, 2026 the moon is a Waxing Crescent with about 8% of its disc lit, roughly 2.8 days after the previous new moon. That figure is computed from lunar phase formulas, not looked up, so it is available for any year in the range. The weekday of a date is found by counting the days from a known reference date and taking the remainder after dividing by seven. The calculator applies that rule to real Gregorian dates, including leap days, which is why it works equally well for a birth date in 1985 and a wedding date in 2032. Use the form above to check any other date, or open the neighbouring dates linked below.The answer in detail
The moon and the calendar
How weekday lookups work
It is a Saturday. Day 227 of 365. Week 33 of 2026. Quarter 3 of 2026. Yes, it is a Saturday. No. 51 days ago. Waxing Crescent, about 8% illuminated.Frequently asked questions
What day of the week is August 15, 2026?
What day of the year is August 15, 2026?
What ISO week is it?
Which quarter is it in?
Is it a weekend?
Is 2026 a leap year?
How far away is the date?
What is the moon phase on that date?
What Day of the Week Is August 15, 2026?: Saturday August 15, 2026 — 51 days ago
The result uses the exact inputs on this page and calendar/time arithmetic appropriate to this calculator. The result shown above is the value to use for this calculation.
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